Improvement in stop-cocks



H. WA'TKEYS.

STOP-COCK.

Patented May 9,1876.

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.W ,Y www a M vN PETERS. PHDTO-LITHOGRAFHER. WASHINGTON D. G4

"entran sfr-mns PATENT VHENRY wAgTKEYs, or svRAcUsE, New YORK;

' yIMPaovElvnsNT IN s'ToP-coclcs.

Specification forming part of Letters Patent No. 177,180, dated May 9, 1876; application filed October 30, 187 5. l

To all whom fit may concern Be it known that I, HENRY WATKEYs,Aof Syracuse, in the county of Onondaga, in the State of New York, have invented a new and- .useful Improvement in Stop-Gocks,'ot' which the following, taken in connection with the accompanying drawing, is a full, clear, and exact description.

My invention relates to improvements in that class of cocks and faucets which have a tapering plug lengthwise in the shell or barrel, with its largest end towardv the inlet, and

" a passage or channel through same, formed by a central longitudinal, cavity in its large `end,.and one or more orices in itsside, in-

tersecting the cavity,l and provided with a stern or rod at the small end, projecting through the outer ,or free end of the shell or barrel ot the cock.

The object of the invention is to render the plug self-tightening or self-seating as rapidly as it is being worn, and to retain it in its seat when relieved from pressure at the inlet, and

at the same time allow it to be loosened by` a stroke on the top of the stem or rod without causing leakage around the latter.v

The invention consists in the combination,

with the shell or barrel having a longitudinal inward tapering plug-seat, and the taper ing plug having a central cavity in the large end, and a stem or rod at the small end projecting through the outer or free end of the barrel, of a stuffing-box attached at the outer extremity of the shell or barrel, and having in its collar or gland an annular recess around.

' spondin g parts.

a is the shell or barrel of the cock, having, in this case, the inlet at the bottom. b is the plug-seat formed lengthwise inthe barrel, with a uniform taper from the inlet inward a sufficient distance beyond the lateral outlet orV I outlets c to allow for wear'of the plug. d is the tapering plug, which, when new, -is of proper size' to prevent its entering theentire length ot' the seat b. tudinal cavity in the large end of the plug,

extending partly its length. fis an orifice or preventing leakage around the stem g. The' gland is constructed with an annular recess or chamber, u, in the outerv end. around the stem g, extending partly its length, and leaving sufficient material at the inner end of the gland to form a solid seat for a spiral spring or elastic cushion. o is a spiral spring or elastic -cushioutting the recess aforesaid. This device supports or retains the'plug in its seat when relieved from pressure 'at the inlet, and also compensates for the diminution in .thesize of the plug caused by the wearing of same; or, in other words, it draws 'the plug into its seat as rapidly as it is worn off, thus rendering the same selftightening or self-seating. At the same time, by its combination with lthe stuffing-box, it allows theplug to be loosened by striking on the end of the rod or stem g without causing leakage.

I am aware that stuffing-boxes with a spiral spring supporting the valve have been used in combination with globe valves or cocks,'having the discharge opened by'forcing the valve endwise and lifting the same 0E its seat; and I, therefore, do not claim the same, broadly.

What I do claim as my invention, is The combination, with the shell or barrel c having the longitudinal tapering plug-seat b,

and the tapering or wedging plug d .having central cavity e, side outlet or outlets f, and

e is the central longistem g,of the stuffing-box` fhayingan'nular twoettestingwitnesseswatii-Syracuse, in the recess u` extending partly :dthelength ofgthe countyof'eQnondaga, andgStatelofLNewlYork, gland, and the spiral spring o, constructed this 25th day of 0`ctobe1',`1875.` substantially as described and shown, for the HENRY WATKEYS= [L. S.]

purpose sen forth. Witnesses: l

In testimony whereofv I have signed my` CHRISTIAN H0LMSCI.RUP,J1.,l na'me and affixed `mysea-l liu the presence of 1T .V0.ULAAS. 

